Android: Free app Decide lets you scan barcodes in the store and see if that item is at a low price point or if you should wait for an upcoming drop.

If you haven't heard of Decide, it's a very cool online service that tracks the prices of many electronics, including cameras, TVs, tablets, smartphones, video games, and more. You can search for a product in its database and see whether its at a comparatively low price point in its life, or whether it's high and expecting a drop. The Android app follows in the footsteps of the iPhone app, which lets you scan barcodes right from the store and see Decide's current recommendation for that gadget ("buy" or "wait"). It'll even show you reviews, specs, and check prices nearby and online retailers to make sure you get the best deal.